@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;600&display=swap');

body {
    position: relative;
    background: linear-gradient(-45deg, #000000, #1a1a1a, #000000, #1c1c1c);
    background-size: 400% 400%;
    animation: gradientBG 15s ease infinite;
    color: #fff;
    font-family: 'Poppins', sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    overflow: hidden;
}

body::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.pexels.com/photos/41006/cat-cat-eye-panel-cat-s-eye-41006.jpeg');
    background-size: cover;
    background-position: center;
    opacity: 0.15;
    z-index: -1;
    animation: fadeIn 3s ease-in-out;
}

.container {
    text-align: center;
    animation: fadeIn 2s ease-in-out;
    position: relative;
    z-index: 1;
}

.welcome-title {
    font-size: 3rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    animation: focus-in-expand 1.2s cubic-bezier(0.250, 0.460, 0.450, 0.940) both;
}

.sub-title {
    font-size: 1.2rem;
    font-weight: 300;
    margin-bottom: 2rem;
    animation: focus-in-expand 1.2s cubic-bezier(0.250, 0.460, 0.450, 0.940) 0.5s both;
}

.button-container {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
}

.btn {
    background-color: transparent;
    border: 2px solid #fff;
    color: #fff;
    padding: 1rem 2rem;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    border-radius: 50px;
    min-width: 150px;
}

.btn:hover {
    background-color: #fff;
    color: #000;
    transform: scale(1.05);
    box-shadow: 0 0 25px rgba(255, 255, 255, 0.3);
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideInFromTop {
    from { transform: translateY(-50px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

@keyframes slideInFromBottom {
    from { transform: translateY(50px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

@keyframes gradientBG {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

@keyframes focus-in-expand {
    0% {
        letter-spacing: -0.5em;
        filter: blur(12px);
        opacity: 0;
    }
    100% {
        filter: blur(0px);
        opacity: 1;
    }
}

/* Responsive Styles */
@media (max-width: 768px) {
    .welcome-title {
        font-size: 2rem;
    }

    .sub-title {
        font-size: 1rem;
    }

    .button-container {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 80%;
        padding: 0.8rem 1.5rem;
    }
}